Value in tag html. is it possible get it?

Question

I have been helping my buddy HTML , when I realized that strange thing we did:

<html>
<body>
<input name="test" value="100">  
</body>

</html>

how do I retrive that value in JS. I've tried it;

var n = document.getElementById("test");
alert(n);

why it show "null" ?`enter code here

Possible duplicate of [JavaScript: how to get value of text input field?](http://stackoverflow.com/questions/11563638/javascript-how-to-get-value-of-text-input-field) — evolutionxbox, Feb 09 '17 at 14:18

score 0 · Answer 1 · answered Feb 09 '17 at 13:45

0

Add an id attribute:

<html>
    <body>
        <input id="test" name="test" value="100">  
    </body>
</html>

And read value:

var n = document.getElementById("test").value;

answered Feb 09 '17 at 13:45

Bartek Fryzowicz

score 0 · Answer 2 · answered Feb 09 '17 at 13:46

0

var n = document.getElementById("test").value;
alert(n);

<input id="test" value="100">

Use id attribute and .value to fetch its value.

answered Feb 09 '17 at 13:46

void

score 0 · Answer 3 · answered Feb 09 '17 at 13:47

0

If you must use name instead id:

var n = document.getElementsByName("test")[0].value;
alert(n);

<input name="test" value="100">

answered Feb 09 '17 at 13:47

Arkej

score 0 · Answer 4 · answered Feb 09 '17 at 13:49

0

var n = document.getElementById("test");
alert(n.value);

<input type="text" id="test" value="1000" />

answered Feb 09 '17 at 13:49

Vilas Kumkar

4 Answers4